Home Analytics and Security platform. Combining Arduino, an array of sensors, and some ruggedized off-the-shelf cameras, and some 3D printed parts, you could build something comparable to a Nest suite for a fraction of the cost, that did cool stuff like report to Google Analytics.

3D printer extruder that prints with gummi bear materials.

A bicycle framebuilding fixture. Another idea I’ve been futzing with since I first started building bikes, one of my upcoming projects will be to design one that works with v-slot extrusion, and then do 3D prints to test all the parts until I finalize a design. Once nailed down, I’ll have the actual parts machined so that I can have a fixture that won’t melt.

Actually been brainstorming this one extensively, will feature a much larger build area — 36″ by 36″ by 18″ and a heated enclosure, among other things. Probably something I’ll work on in late 2017 through part of 2018.↩

Simple idea, but why not? You could even set it up for one-axis CNC with a controllable depth, if you’re inclined.↩